I use BazQux (https://bazqux.com/) as it was the closest to the old Google Reader I could find.

The developer also set up their own instance of FiveFilters Full Text Rss (https://www.fivefilters.org/full-text-rss/) for use with that reader to do fetch the content. I typically use this as proxy for any feeds I'm going to add where the author didn't provide the full text.

Other than that: * The BazQux web interface has a button to fetch the full text content of the article. * As you noted, FeedMe on Android can also switch to web mode to fetch full content.

I prefer the Five Filters way because then I can go through my feeds offline while in transit